EP2765657A1 - Usb-verbinder und elektronische vorrichtung - Google Patents

Usb-verbinder und elektronische vorrichtung Download PDF

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Publication number
EP2765657A1
EP2765657A1 EP12851385.0A EP12851385A EP2765657A1 EP 2765657 A1 EP2765657 A1 EP 2765657A1 EP 12851385 A EP12851385 A EP 12851385A EP 2765657 A1 EP2765657 A1 EP 2765657A1
Authority
EP
European Patent Office
Prior art keywords
usb
pcb board
usb connector
head
buckle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12851385.0A
Other languages
English (en)
French (fr)
Other versions
EP2765657A4 (de
Inventor
Jianjun Xiao
Menglong Zhao
Wenqing FU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Device Co Ltd
Original Assignee
Huawei Device Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Device Co Ltd filed Critical Huawei Device Co Ltd
Publication of EP2765657A1 publication Critical patent/EP2765657A1/de
Publication of EP2765657A4 publication Critical patent/EP2765657A4/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/512—Bases; Cases composed of different pieces assembled by screw or screws
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6594—Specific features or arrangements of connection of shield to conductive members the shield being mounted on a PCB and connected to conductive members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
    • H01R12/7011—Locking or fixing a connector to a PCB
    • H01R12/7047—Locking or fixing a connector to a PCB with a fastener through a screw hole in the coupling device

Definitions

  • the present invention relates to the field of electrical connector technologies, and in particular, to a Universal Serial Bus (Universal Serial Bus, USB for short) connector and an electronic device including the USB connector.
  • Universal Serial Bus Universal Serial Bus, USB for short
  • USB connector is widely applied in electronic devices, such as data cards, and USB flash drives (USB flash drive, U drive for short), and these data cards and USB flash drives are commonly applied in electronic products such as a mobile phone, a walkie talkie, a telephone, and a computer.
  • USB flash drives USB flash drive, U drive for short
  • the data cards and U flash drives are frequently inserted and removed in use; therefore, there are high requirements for the structural strength and grounding reliability of the USB connector.
  • a universal USB connector generally has six pins, four of which are function pins used to transmit a signal or data, and the other two are grounding pins used to ground a shell element of the USB connector and further improve welding strength of the USB connector.
  • welding joints of the two grounding pins become major force-bearing points for insertion and removal stresses. It can be learned from failure analysis of USB connectors that in most failure samples a crack occurs at a welding joint of a grounding pin because grounding pins are major force-bearing points.
  • grounding reliability of the USB connector is affected, and on the other hand, structural strength of the USB connector is also affected, resulting in a failure or malfunction of the USB connector.
  • a welding joint loosens more easily, impairing reliability of the USB connector. Therefore, under the premise that the grounding reliability of the USB connector is ensured, it is crucial to ensure structural strength reliability of the USB connector.
  • a main structure forming a current universal USB connector namely, a USB head
  • a printed circuit board Printed Circuit Board, PCB for short
  • an additional mechanical structure for example, a fixed lug
  • FIG. 1 schematically shows a USB connector in prior art 1.
  • a terminal of a male connector of a USB head is connected to a female connector to achieve the purpose of working.
  • the male connector of the USB head is welded on a PCB board by using four weld legs on the USB head, which not only achieves the effect of grounding, but also achieves the effect of mutual positioning between the USB head and the PCB board.
  • the USB head is welded on the PCB board to implement grounding and positioning between the USB head and the PCB board; however, because of a reliability problem of welding techniques, for example, faulty welding, the USB connector has undesirable structural strength and grounding reliability.
  • the USB head is welded on the PCB board; therefore, the overall thickness of the USB connector is relatively large, which adversely affects product miniaturization and cost reduction of the USB connector.
  • the USB head of the USB connector in prior art 1 is welded on the PCB board by using the four weld legs on the USB head, and the four weld legs increase the overall length of the USB head. As a result, the total length of the USB head reaches 21.5 mm.
  • an excessively long USB head more easily causes improper use, for example, incorrect insertion.
  • the USB head is relatively long, and therefore the overall rigidity of the USB head is relatively low, making it easy to bend and deform during use, thereby resulting in a failure or malfunction of the USB connector.
  • the USB head of the UBS connector in prior art 1 has four weld legs, and therefore, two weld legs are added.
  • the excessive long USB head and the two added weld legs both adversely affect product miniaturization and cost reduction of the USB connector.
  • FIG. 2a and FIG. 2b schematically show a USB connector in prior art 2.
  • An edge connector edge connector
  • a golden finger of a PCB board is connected to a female connector of a USB head, so as to achieve the purpose of working.
  • a lug is additionally arranged on a metal housing of the USB head, and the lug is fastened at a shell element of the USB connector by using a screw to achieve the purpose of grounding the shell element of the USB connector.
  • grounding is implemented by fastening the lug of the USB head to the shell element of the USB connector, thereby causing the problem of complex structure and unreliable grounding.
  • the USB head is connected to the shell element of the connector by using the lug additionally arranged on the metal housing of the USB head, and therefore the additionally arranged lug increases the overall length of the USB head, and the total length of the USB head reaches 18 mm.
  • an excessively long USB head more easily causes improper use, for example, incorrect insertion.
  • the USB head is relatively long, and therefore the overall rigidity of the USB head is relatively low, making it easy to bend and deform during use, thereby resulting in a failure or malfunction of the USB connector.
  • the excessive long USB head also adversely affects product miniaturization and cost reduction of the USB connector.
  • USB connector that has improved structural strength and enhanced grounding reliability and can achieve the objectives of product miniaturization and cost reduction.
  • the present invention may be used to solve the problem of undesirable structural strength and poor grounding reliability of a USB connector in the prior art.
  • embodiments of the present invention provide a USB connector.
  • the USB connector improves structural strength and grounding reliability, and may further shorten the length of a USB head, thereby achieving the objectives of product miniaturization and cost reduction.
  • a USB connector includes a USB head, a PCB board and a shell element, where the USB head includes an insulation plastic core and a metal housing; a conductive layer is arranged on the surface of the PCB board, the PCB board is assembled inside the USB head and the PCB board and the USB head are mutually positioned; and the USB head and the PCB board are fastened at the shell element by using a fastening member, and the metal housing is pressure-welded on the conductive layer on the surface of the PCB board.
  • a first slot and a second slot are arranged on the PCB board, a first buckle and a second buckle are arranged on the insulation plastic core of the USB head, and the first buckle and the second buckle are buckled inside the first slot and the second slot, respectively.
  • the first buckle and the second buckle are elastic elements.
  • the first buckle and the second buckle are asymmetrically arranged on the insulation plastic core.
  • the fastening member is a screw.
  • holes for inserting the screw are formed on the metal housing of the USB head and the PCB board, respectively, a mounting column, for screwing and keeping the screw, is arranged on the shell element, and the mounting column protrudes from the bottom of the shell element and a threaded hole is formed inside the mounting column.
  • the conductive layer is a copper layer.
  • a plurality of conductive terminals is arranged on the insulation plastic core of the USB head, and the plurality of conductive terminals is electrically connected to an edge connector of the PCB board.
  • a PCB board and a USB head are mutually positioned by using a buckle-slot structure, and are fastened at a shell element by using a fastening member; therefore, overall structural strength of the USB connector is ensured.
  • a metal housing of the USB head is pressure-welded on a conductive layer on the surface of the PCB board; therefore, grounding reliability of the shell element of the USB connector is ensured.
  • the PCB board and the USB head are mutually positioned by using the buckle-slot structure, and are fastened at the shell element by using the fastening member; therefore, compared with the prior art, welding joints used to connect the USB head and the PCB board are eliminated, and a lug used to fasten the USB head to the shell element of the USB connector does not need to be additionally arranged on the USB head. Therefore, by using the USB connector according to the present invention, the length of the USB head can be shortened, thereby achieving product miniaturization and production cost reduction.
  • the first buckle and the second buckle are formed asymmetrically, a fool-proof function is ensured in the process of assembling the PCB board inside the USB head, inverse or incorrect insertion of the PCB board is avoided, thereby ensuring the function of normal use of the USB connector.
  • the present invention further provides an electronic device including the USB connector.
  • the electronic device may be a data card or a USB flash drive, and definitely may also be other electronic products such as a mobile phone, a walkie talkie, a telephone, a computer and a peripheral of the computer.
  • a USB connector 100 provides a USB connector.
  • a USB connector 100 includes a USB head 10, a PCB board 20, and a shell element 30.
  • a fastening member for example, a screw 40, is used to fasten the PCB board 20 on the shell element 30, which will be described in detail in the following.
  • the USB head 10 is formed by an insulation plastic core 11 and a metal housing 12.
  • the insulation plastic core 11 is assembled inside the metal housing 12 in the direction of arrow A shown in FIG. 4 and is covered by the metal housing 12, so that the insulation plastic core 11 and the metal housing 12 are assembled to form the USB head 10.
  • FIG. 4 shows the reverse side of the insulation plastic core 11 and the metal housing 12 shown in FIG. 3 .
  • a plurality of conductive terminals may be pre-arranged on the insulation plastic core 11, and the conductive terminals form signal or data transmission pins of the USB connector.
  • the PCB board 20 is assembled inside the USB head 10 in the direction of arrow B shown in FIG. 5a , so that a golden finger, namely, an edge connector, of the PCB board 20 is connected to the conductive terminals, namely, the signal or data transmission pins, on the insulation plastic core 11, so as to achieve the purpose of signal conduction.
  • a first slot 21 and a second slot 22 are arranged on the PCB board 20. Accordingly, a first buckle 111 and a second buckle 112 are arranged on the insulation plastic core 11.
  • the first buckle 111 and the second buckle 112 are elastic, or the first buckle 111 and the second buckle 112 are formed by elastic elements.
  • the first buckle 111 and the second buckle 112 are rubber protrusions formed on the insulation plastic core 11.
  • the first buckle 111 and the second buckle 112 are buckled inside the corresponding first slot 21 and second slot 22, respectively. In this way, the PCB board 20 and the insulation plastic core 11 can be reliably and mutually positioned, and therefore the PCB board 20 and the USB head 10 can be reliably and mutually positioned.
  • the first buckle 111 and the second buckle 112 may be symmetrically formed on the insulation plastic core 11. However, preferably, as shown in detail in FIG. 5c , the first buckle 111 and the second buckle 112 are asymmetrically formed on the insulation plastic core 11.
  • This design ensures a fool-proof function in a process of assembling the PCB board 20 inside the USB head 10, that is, the asymmetrically arranged first buckle 111 and second buckle 112 prevent a USB connector manufacturer from inversely or incorrectly inserting the PCB board 20 in the process of assembling the PCB board 20 inside the USB head 10, thereby ensuring the function of normal use of the USB connector.
  • the buckled USB head 10 and PCB board 20 are fastened to the shell element 30 by using the fastening member.
  • the fastening member may be, for example, the screw 40. Therefore, a hole 41 and a hole 42 for inserting the screw 40 (refer to FIG. 3 ) are formed in advance on the metal housing 12 of the USB head 10 and the PCB board 20, respectively. Accordingly, a mounting column 43, for screwing and keeping the screw 40 (refer to FIG. 3 ), is arranged on the shell element 30. The mounting column 43 protrudes from the bottom of the shell element 30 and a threaded hole is formed inside the mounting column 43. In the foregoing manner, the buckled USB head 10 and PCB board 20 are fastened to the shell element 30, thereby ensuring overall structural strength of the USB connector 100.
  • a conductive layer is arranged on the surface of the PCB board 20, the arrangement of the conductive layer may be, for example, implemented by using a plurality of known methods such as electroplating, coating, and chemical deposition, and the conductive layer may be, for example, a copper layer.
  • a PCB board and a USB head are mutually positioned by using a buckle-slot structure and the buckled USB head and PCB board are fastened to a shell element by using a screw; therefore, overall structural strength of the USB connector is ensured.
  • the metal housing of the USB head is pressure-welded on the conductive layer on the surface of the PCB board by using the screw; therefore, compared with the prior art, in which the grounding function is implemented by welding grounding pins, grounding reliability of the shell element of the USB connector is ensured.
  • the PCB board and the USB head are mutually positioned by using the buckle-slot structure, and are fastened to a shell element by using a fastening member; therefore, compared with the prior art, welding joints used to connect the USB head and the PCB board are eliminated, and a lug used to fasten the USB head on the shell element of the USB connector does not need to be additionally arranged on the USB head.
  • the USB connector according to the present invention the length of the USB head can be shortened, thereby achieving product miniaturization and production cost reduction.
  • a plurality of buckles is asymmetrically formed, of the buckle-slot structure used to implement accurate and reliable positioning of the PCB board and the USB head; therefore, a fool-proof function in the process of assembling the PCB board inside the USB head is ensured, and inverse or incorrect insertion of the PCB board is avoided, thereby ensuring the function of normal use of the USB connector.
  • USB connector according to the present invention is not only applicable to a data card and a USB flash drive, but also applicable to other portable electronic products such as a mobile phone, a walkie talkie, a telephone, a computer, and a peripheral of the computer.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP12851385.0A 2011-11-22 2012-11-12 Usb-verbinder und elektronische vorrichtung Withdrawn EP2765657A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011103734431A CN102496804A (zh) 2011-11-22 2011-11-22 Usb连接器及电子设备
PCT/CN2012/084434 WO2013075595A1 (zh) 2011-11-22 2012-11-12 Usb连接器及电子设备

Publications (2)

Publication Number Publication Date
EP2765657A1 true EP2765657A1 (de) 2014-08-13
EP2765657A4 EP2765657A4 (de) 2014-11-05

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ID=46188603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12851385.0A Withdrawn EP2765657A4 (de) 2011-11-22 2012-11-12 Usb-verbinder und elektronische vorrichtung

Country Status (4)

Country Link
US (1) US9130297B2 (de)
EP (1) EP2765657A4 (de)
CN (1) CN102496804A (de)
WO (1) WO2013075595A1 (de)

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CN102496804A (zh) 2012-06-13
EP2765657A4 (de) 2014-11-05
WO2013075595A1 (zh) 2013-05-30
US9130297B2 (en) 2015-09-08
US20140256180A1 (en) 2014-09-11

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